922 citations · 4.8k across the 30 of their papers we have counts for
30 papers
Nonlinear intensity dependence of photogalvanics and photoconductance induced by terahertz laser radiation in twisted bilayer graphene close to magic angle
S. Hubmann, P. Soul, G. Di Battista +5
We report on the observation of the nonlinear intensity dependence of the bulk photogalvanic current and photoconductivity in the twisted graphene with small twist angles close to…
Spin dependent charge transfer in MoSe2/hBN/Ni hybrid structures
H. Tornatzky, C. Robert, P. Renucci +10
We present magneto-photoluminescence measurements in a hybrid 2D semiconductor/ferromagnetic structure consisting of MoSe2/hBN/Ni. When the Nickel layer is magnetized, we observe c…
Interaction driven giant thermopower in magic-angle twisted bilayer graphene
Arup Kumar Paul, Ayan Ghosh, Souvik Chakraborty +9
Magic-angle twisted bilayer graphene (MtBLG) has proven to be an extremely promising new platform to realize and study a host of emergent quantum phases arising from the strong cor…
Emergence of broken-symmetry states at half-integer band fillings in twisted bilayer graphene
Saisab Bhowmik, Bhaskar Ghawri, Nicolas Leconte +9
The dominance of Coulomb interactions over kinetic energy of electrons in narrow, non-trivial moiré bands of magic-angle twisted bilayer graphene (TBG) gives rise to a variety of c…
Out-of-equilibrium criticalities in graphene superlattices
Alexey I. Berdyugin, Na Xin, Haoyang Gao +19
In thermodynamic equilibrium, current in metallic systems is carried by electronic states near the Fermi energy whereas the filled bands underneath contribute little to conduction.…
Intrinsic circularly-polarized exciton emission in a twisted van-der-Waals heterostructure
J. Michl, S. A. Tarasenko, F. Lohof +12
The investigation of excitons in van-der-Waals heterostructures has led to profound insights into the interplay of crystal symmetries and fundamental effects of light-matter coupli…
Raman imaging of twist angle variations in twisted bilayer graphene at intermediate angles
A. Schäpers, J. Sonntag, L. Valerius +9
Van der Waals layered materials with well-defined twist angles between the crystal lattices of individual layers have attracted increasing attention due to the emergence of unexpec…
Unveiling excitonic properties of magnons in a quantum Hall ferromagnet
A. Assouline, M. Jo, P. Brasseur +8
Magnons enable transferring a magnetic moment or spin over macroscopic distance. In quantum Hall ferromagnet, it has been predicted in the early 90s that spin and charges are entan…
Vanishing thermal equilibration for hole-conjugate fractional quantum Hall states in graphene
Saurabh Kumar Srivastav, Ravi Kumar, Christian Spånslätt +5
Transport through edge-channels is responsible for conduction in quantum Hall (QH) phases. Topology dictates quantization of both charge and thermal transport coefficients. These t…
Imaging orbital ferromagnetism in a moiré Chern insulator
C. L. Tschirhart, M. Serlin, H. Polshyn +8
Electrons in moiré flat band systems can spontaneously break time reversal symmetry, giving rise to a quantized anomalous Hall effect. Here we use a superconducting quantum interfe…
Nonlinear twistoptics at symmetry-broken interfaces
Kaiyuan Yao, Nathan R. Finney, Jin Zhang +17
Broken symmetries induce strong nonlinear optical responses in materials and at interfaces. Twist angle can give complete control over the presence or lack of inversion symmetry at…
Interplay between spin proximity effect and charge-dependent exciton dynamics in MoSe / CrBr van der Waals heterostructures
T. P. Lyons, D. Gillard, A. Molina-Sánchez +9
Semiconducting ferromagnet-nonmagnet interfaces in van der Waals heterostructures present a unique opportunity to investigate magnetic proximity interactions dependent upon a multi…
Shape anisotropy revisited in single-digit nanometer magnetic tunnel junctions
K. Watanabe, B. Jinnai, S. Fukami +2
Nanoscale magnetic tunnel junction plays a pivotal role in magnetoresistive random access memories. Successful implementation depends on a simultaneous achievement of low switching…
Dynamic band structure tuning of graphene moiré superlattices with pressure
Matthew Yankowitz, Jeil Jung, Evan Laksono +7
Heterostructures of atomically-thin materials have attracted significant interest owing to their ability to host novel electronic properties fundamentally distinct from their const…
Superballistic flow of viscous electron fluid through graphene constrictions
R. Krishna Kumar, D. A. Bandurin, F. M. D. Pellegrino +13
Electron-electron (e-e) collisions can impact transport in a variety of surprising and sometimes counterintuitive ways. Despite strong interest, experiments on the subject proved c…
Enabling valley selective exciton scattering in monolayer WSe through upconversion
M. Manca, M. M. Glazov, C. Robert +9
Excitons, Coulomb bound electron-hole pairs, are composite bosons and their interactions in traditional semiconductors lead to condensation and light amplification. The much strong…
Effective Mass in Bilayer Graphene at Low Carrier Densities: the Role of Potential Disorder and Electron-Electron Interaction
J. Li, L. Z. Tan, K. Zou +6
In a two-dimensional electron gas, the electron-electron interaction generally becomes stronger at lower carrier densities and renormalizes the Fermi liquid parameters such as the…
WSe2 light-emitting tunneling transistors with enhanced brightness at room temperature
F. Withers, O. Del Pozo-Zamudio, S. Schwarz +15
Monolayers of molybdenum and tungsten dichalcogenides are direct bandgap semiconductors, which makes them promising for opto-electronic applications. In particular, van der Waals h…
Atomic layer deposition of Y2O3 on h-BN for a gate stack in graphene FETs
N. Takahashi, K. Watanabe, T. Taniguchi +1
The combination of h-BN and high-k dielectrics is required for a top gate insulator in miniaturized graphene field-effect transistors because of the low dielectric constant of h-BN…
Measurement of the Transmission Phase of an Electron in a Quantum Two-Path Interferometer
S. Takada, M. Yamamoto, C. Bäuerle +4
A quantum two-path interferometer allows for direct measurement of the transmission phase shift of an electron, providing useful information on coherent scattering problems. In mes…
Quality heterostructures from two dimensional crystals unstable in air by their assembly in inert atmosphere
Y. Cao, A. Mishchenko, G. L. Yu +16
Many layered materials can be cleaved down to individual atomic planes, similar to graphene, but only a small minority of them are stable under ambient conditions. The rest reacts…
Landau level spectroscopy of electron-electron interactions in graphene
C. Faugeras, S. Berciaud, P. Leszczynski +11
We present magneto-Raman scattering studies of electronic inter Landau level excitations in quasi-neutral graphene samples with different strengths of Coulomb interaction. The band…
Composite Fermions and Broken Symmetries in Graphene
F. Amet, A. J. Bestwick, J. R. Williams +4
The electronic properties of graphene are described by a Dirac Hamiltonian with a fourfold symmetry of spin and valley. This symmetry may yield novel fractional quantum Hall (FQH)…
Two-dimensional Quasi-Freestanding Molecular Crystals for High-Performance Organic Field-Effect Transistors
Daowei He, Yuhan Zhang, Qisheng Wu +18
Two-dimensional atomic crystals are extensively studied in recent years due to their exciting physics and device applications. However, a molecular counterpart, with scalable proce…